After setting new channel num, it needs free old ring memory and
allocate new ring memory. If there is no enough memory and allocate
new ring memory fail, the ring may initialize fail. To make sure
the network interface can work normally, driver should revert the
channel to the old configuration.
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds ethtool_ops.set_channels support for HNS3 VF driver,
and updates related TQP information and RSS information, to support
modification of VF TQP number, and uses current rss_size instead of
max_rss_size to initialize RSS.

Also, fixes a format error in hclgevf_get_rss().
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fixed the incorrect prefix for the 'nfp_fw_load' function.
Signed-off-by: NDirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NSimon Horman <simon.horman@netronome.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add support for the 'reset_dev_on_drv_probe' devlink parameter. The
reset control policy is controlled by the 'abi_drv_reset' hwinfo key.
Signed-off-by: NDirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NSimon Horman <simon.horman@netronome.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add support for the 'fw_load_policy' devlink parameter. The FW load
policy is controlled by the 'app_fw_from_flash' hwinfo key.

Remap the values from devlink to the hwinfo key and back.
Signed-off-by: NDirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NSimon Horman <simon.horman@netronome.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Register devlink parameters for driver use. Subsequent patches will add
support for specific parameters.

In order to support devlink parameters, the management firmware needs to
be able to lookup and set hwinfo keys.
Signed-off-by: NDirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NSimon Horman <simon.horman@netronome.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The firmware reset and loading policies can be controlled with the
combination of three hwinfo keys, 'abi_drv_reset', 'abi_drv_load_ifc'
and 'app_fw_from_flash'.

'app_fw_from_flash' defines which firmware should take precedence,
'Disk', 'Flash' or the 'Preferred' firmware. When 'Preferred'
is selected, the management firmware makes the decision on which
firmware will be loaded by comparing versions of the flash firmware
and the host supplied firmware.

'abi_drv_reset' defines when the driver should reset the firmware when
the driver is probed, either 'Disk' if firmware was found on disk,
'Always' reset or 'Never' reset. Note that the device is always reset
on driver unload if firmware was loaded when the driver was probed.

'abi_drv_load_ifc' defines a list of PF devices allowed to load FW on
the device.

Furthermore, we limit the cases to where the driver will unload firmware
again when the driver is removed to only when firmware was loaded by the
driver and only if this particular device was the only one that could
have loaded firmware. This is needed to avoid firmware being removed
while in use on multi-host platforms.
Signed-off-by: NDirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NSimon Horman <simon.horman@netronome.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add support for the NSP HWinfo set command. This closely follows the
HWinfo lookup command.
Signed-off-by: NDirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NSimon Horman <simon.horman@netronome.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There are cases where we want to read a hwinfo entry from the NFP, and
if it doesn't exist, use a default value instead.

To support this, we must silence warning/error messages when the hwinfo
entry doesn't exist since this is a valid use case. The NSP command
structure provides the ability to silence command errors, in which case
the caller should log any command errors appropriately. Protocol errors
are unaffected by this.
Signed-off-by: NDirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NSimon Horman <simon.horman@netronome.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add support for the simple command that indicates whether application
firmware is loaded.
Signed-off-by: NDirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NSimon Horman <simon.horman@netronome.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Don't populate the array modes on the stack but instead make it
static const. Makes the object code smaller by 303 bytes.

Before:
   text	   data	    bss	    dec	    hex	filename
  51240	   5008	   1312	  57560	   e0d8 mellanox/mlx4/en_ethtool.o

After:
   text	   data	    bss	    dec	    hex	filename
  50937	   5008	   1312	  57257	   dfa9	mellanox/mlx4/en_ethtool.o

(gcc version 9.2.1, amd64)
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add I40E_DEV_ID_10G_BASE_T_BC to i40e_pci_tbl
Signed-off-by: NMariusz Stachura <mariusz.stachura@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Add IP generic TX checksum offload functionality.
Signed-off-by: NSasha Neftin <sasha.neftin@intel.com>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

In Xen environment, if Xen-swiotlb is enabled, ixgbe driver
could possibly allocate a page, DMA memory buffer, for the first
fragment which is not suitable for Xen-swiotlb to do DMA operations.
Xen-swiotlb have to internally allocate another page for doing DMA
operations. This mechanism requires syncing the data from the internal
page to the page which ixgbe sends to upper network stack. However,
since commit f3213d93 ("ixgbe: Update driver to make use of DMA
attributes in Rx path"), the unmap operation is performed with
DMA_ATTR_SKIP_CPU_SYNC. As a result, the sync is not performed.
Since the sync isn't performed, the upper network stack could receive
a incomplete network packet. By incomplete, it means the linear data
on the first fragment(between skb->head and skb->end) is invalid. So
we have to copy the data from the internal xen-swiotlb page to the page
which ixgbe sends to upper network stack through the sync operation.

More details from Alexander Duyck:
Specifically since we are mapping the frame with
DMA_ATTR_SKIP_CPU_SYNC we have to unmap with that as well. As a result
a sync is not performed on an unmap and must be done manually as we
skipped it for the first frag. As such we need to always sync before
possibly performing a page unmap operation.

Fixes: f3213d93 ("ixgbe: Update driver to make use of DMA attributes in Rx path")
Signed-off-by: NFiro Yang <firo.yang@suse.com>
Reviewed-by: NAlexander Duyck <alexander.h.duyck@linux.intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Since commit
'5098850c ("i40e/i40evf: i40e_register.h updates")'
it is no longer possible to trigger an EMP Reset from debugfs, but it's
possible to request it either way, to end up with a bad reset request:

echo empr > /sys/kernel/debug/i40e/0002\:01\:00.1/command
i40e 0002:01:00.1: debugfs: forcing EMPR
i40e 0002:01:00.1: bad reset request 0x00010000

So let's remove this piece of code and show the available valid commands
as it is when any invalid command is issued.
Signed-off-by: N"Mauro S. M. Rodrigues" <maurosr@linux.vnet.ibm.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

There are several uses of hw_dbg in the code, producing no output. This
patch implements it using dev_debug.

Initially the intention was to implement it using netdev_dbg, analogously
to what is done in ixgbe for instance. That approach was avoided due to
some early usages of hw_dbg, like i40e_pf_reset, before the VSI structure
initialization causing NULL pointer dereference during the driver probe if
the debug messages were turned on as soon as the module is probed.

v2:
 - Use dev_dbg instead of pr_debug, and take advantage of dev_name
instead of crafting pretty much the same device name locally as suggested
by Jakub Kicinski.
Signed-off-by: N"Mauro S. M. Rodrigues" <maurosr@linux.vnet.ibm.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

The mentioned function references a i40e_hw attribute, as parameter for
hw_dbg, but it doesn't exist in the function scope.
Fixes it by changing  parameters from i40e_hmc_info to i40e_hw which can
retrieve the necessary i40e_hmc_info.

v2:
 - Fixed reverse xmas tree code style issue as suggested by Jakub Kicinski
Signed-off-by: N"Mauro S. M. Rodrigues" <maurosr@linux.vnet.ibm.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

PCIe device control 2 defines does not use internally.
This patch comes to clean up those.
Signed-off-by: NSasha Neftin <sasha.neftin@intel.com>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Allow the VF to override the "permanent" MAC address set by the host.
This allows bonding to work in the case where the administrator has set
the VF MAC.

Note that the VF must still be set to Trusted on the host if this change
is to be accepted by the PF driver.
Signed-off-by: NMitch Williams <mitch.a.williams@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Add NVM checksum validation during probe functionality.
Signed-off-by: NSasha Neftin <sasha.neftin@intel.com>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

In the function fm10k_xmit_frame_ring, we recently switched to using
the skb_frag_size accessor instead of directly using the size member of
the skb fragment.

This made the for loop slightly harder to read because it created a very
long line that is difficult to split up. Avoid this by using a local
variable in the for loop, so that we do not have to break the line on an
open parenthesis.
Signed-off-by: NJacob Keller <jacob.e.keller@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Move igc_phy_setup_autoneg, igc_wait_autoneg and igc_set_fc_watermarks
up to avoid forward declaration.
It is not necessary to forward declare these static methods.
Signed-off-by: NSasha Neftin <sasha.neftin@intel.com>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

After hot plugging an 1Gbps Ethernet cable with 1Gbps link partner, the
MII_BMSR may report 10Mbps, renders the network rather slow.

The issue has much lower fail rate after commit 59653e64 ("e1000e:
Make watchdog use delayed work"), which essentially introduces some
delay before running the watchdog task.

But there's still a chance that the hot plugging event and the queued
watchdog task gets run at the same time, then the original issue can be
observed once again.

So let's use mod_delayed_work() to add a deterministic 1 second delay
before running watchdog task, after an interrupt.
Signed-off-by: NKai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch fixed issue in VM which shows no link when hypervisor is
restored from low-power state. The driver is responsible for re-enabling
any features of the device that had been disabled during suspend calls,
such as IRQs and bus mastering.
Signed-off-by: NRadoslaw Tyl <radoslawx.tyl@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

There is no caller of function iavf_debug_d() in tree since
commit 75051ce4 ("iavf: Fix up debug print macro"),
so it can be removed.
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Don't populate the array spec_opcode on the stack but instead make it
static const. Makes the object code smaller by 48 bytes.

Before:
   text	   data	    bss	    dec	    hex	filename
   6914	   1040	    128	   8082	   1f92	hns3/hns3vf/hclgevf_cmd.o

After:
   text	   data	    bss	    dec	    hex	filename
   6866	   1040	    128	   8034	   1f62	hns3/hns3vf/hclgevf_cmd.o

(gcc version 9.2.1, amd64)
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Don't populate the arrays on the stack but instead make them
static const. Makes the object code smaller by 281 bytes.

Before:
   text	   data	    bss	    dec	    hex	filename
  87553	   5672	      0	  93225	  16c29	benet/be_cmds.o

After:
   text	   data	    bss	    dec	    hex	filename
  87112	   5832	      0	  92944	  16b10	benet/be_cmds.o

(gcc version 9.2.1, amd64)
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Remove including <linux/version.h> that don't need it.
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Acked-by: NShannon Nelson <snelson@pensando.io>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We may have some SoCs that can't achieve XGMAC max speed. Limit it if
asked to.
Signed-off-by: NJose Abreu <joabreu@synopsys.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add a test to validate that Split Header feature is working correctly.
It works by using the rececently introduced counter that increments each
time a packet with split header is received.
Signed-off-by: NJose Abreu <joabreu@synopsys.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We are already doing it by default in the TX path so we can also enable
Jumbo Frame support in the RX path independently of MTU value.
Signed-off-by: NJose Abreu <joabreu@synopsys.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We need to set the RX tail pointer so that RX engine starts working
again after finishing the Flow Control test.
Signed-off-by: NJose Abreu <joabreu@synopsys.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add checks for support of Source Address Insertion/Replacement before
running the test.
Signed-off-by: NJose Abreu <joabreu@synopsys.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d
but is perhaps more readable.
Signed-off-by: Nzhong jiang <zhongjiang@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The variable rx_process_result is being initialized with a value that
is never read and is being re-assigned immediately afterwards. The
assignment is redundant, so replace it with the return from function
lan743x_rx_process_packet.

Addresses-Coverity: ("Unused value")
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Only use the TROCR register on R-Car Gen3 as it is not present on other
SoCs.

Offsets used for the undocumented registers are considered reserved and
should not be written to. After some internal investigation with Renesas it
remains unclear why this driver accesses these fields on R-Car Gen2 but
regardless of what the historical reasons are the current code is
considered incorrect.
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Reviewed-by: NYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch removes the use of the undocumented BOC bit of the CCC register.

Current documentation for EtherAVB (ravb) describes the offset of what the
driver uses as the BOC bit as reserved and that only a value of 0 should be
written. After some internal investigation with Renesas it remains unclear
why this driver accesses these fields but regardless of what the historical
reasons are the current code is considered incorrect.

Based on work by Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch removes the use of the undocumented counter registers
CDCR, LCCR, CERCR, CEECR.

Offsets used for undocumented registers are considered reserved and
should not be written to. After some internal investigation with Renesas
it remains unclear why this driver accesses these fields but regardless of
what the historical reasons are the current code is considered incorrect.

Based on work by Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The field name is FBP rather than FPB.

This field is unused and could equally be removed from the driver entirely.
But there seems no harm in leaving as documentation of the presence of the
field.

Based on work by Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Reviewed-by: NYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

hclge_dbg_get_m7_info is used only in the hclge_debugfs.c,
so it should be declared with static.
Signed-off-by: NGuojia Liao <liaoguojia@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>